0 a hole in a bath, sink, etc. through which water flows away and into which you can put a plug -- （浴缸、洗涤槽等的）排水孔，渗水孔
Other attractive babies, too, could disappear down the plughole with the mutual bathwater.
If we had a recovery of any scale, the balance of payments would go right down the plughole.
The school has been wrecked, teacher morale has gone down the plughole and children are expected to study on a building site.
Why should they be washed down the plughole with the rest of the bathwater?
He said that as though the £16 million would be wasted and would disappear down the plughole.
But if there are two plugholes in a bath it is no use stopping up one without stopping up the other.
One industry after another has gone down the plughole.
When we finish with them, presumably they can be flushed down the lavatory or put down the plughole, it matters not.
